Reflections Answers

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Which image is a reflection of the black polygon in quadrant I?

Question illustration
A
the black polygon in quadrant I
B
the red polygon in quadrant II
C
the blue polygon in quadrant III
D
the green polygon in quadrant IV
6

Which graph shows the image of the triangle reflected across the line of reflection shown?

Question illustration
A
On a coordinate plane, a triangle has points (negative 1, negative 3), (2, 4), (4, 2).
Option A
B
On a coordinate plane, a triangle has points (1, 4), (4, 2), (2, 0).
Option B
C
On a coordinate plane, a triangle has points (2, 0), (4, 2), (9, negative 2).
Option C
D
On a coordinate plane, a triangle has points (2, 2), (4, 4), (9, 0).
Option D
7

Marissa wants to write an abbreviated set of directions for finding coordinates of a figure reflected across the y-axis. Which mapping notation is correct?

A
(x, y) right-arrow (negative x, y)
Option A
B
(x, y) right-arrow (x, negative y)
Option B
C
(x, y) right-arrow (negative x, negative y)
Option C
D
(x, y) right-arrow (y, x)
Option D
8

Jorge needs to reflect a figure across the line . Which statements are correct regarding steps he could take to complete the reflection? Check all that apply.

Question illustration
A
Jorge should graph in the vertical line with values of –4 for the line of reflection.
B
Jorge could count how far each pre-image point is from the line of reflection along the perpendicular from the point to the line of reflection.
C
Jorge could count how far each vertex of the figure is from the y-axis and count the same distance on the other side.
D
Jorge will not move any point that lies on the line of reflection.
E
Jorge could check his work by seeing if each segment joining a pre-image point with its image has the midpoint on the line of reflection.
F
Jorge could check his work by making sure that the image has the same orientation as the original.

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